US5934950A - Electrical contact with multiple points of contact - Google Patents
Electrical contact with multiple points of contact Download PDFInfo
- Publication number
- US5934950A US5934950A US08/993,515 US99351597A US5934950A US 5934950 A US5934950 A US 5934950A US 99351597 A US99351597 A US 99351597A US 5934950 A US5934950 A US 5934950A
- Authority
- US
- United States
- Prior art keywords
- tynes
- barrel section
- lead
- extending
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
- H01R13/111—Resilient sockets co-operating with pins having a circular transverse section
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
- H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
Definitions
- the present invention relates to electrical contacts, and more specifically, to contacts with multiple points of contact.
- Failures of conventional separable electrical contacts can be classified as both short and long term.
- Two short term failure modes are contact stubbing and over stressing of the contact tynes. Stubbing occurs when the insertion force of the male portion coupled with misalignment of the male portion upon insertion into the female portion damages one or more of the tynes as well as the lead-in section of the female portion. Over stressing results in substantial reduction in contact normal force. The reduction in contact force causes high contact resistance which can lead to over heating and burnt contacts when the current level is high.
- Two long term failure modes are stress relaxation of the contact tynes and fretting.
- the relaxation of the contacts can be mitigated by providing additional mechanical assist or lowering the stress levels in the contact tynes.
- Fretting is the relative micro-motion at the contact interface between male and female contact portions.
- the first two modes known as rocking and twisting, are female contact portion angular displacement relative to the longitudinal axis of the male contact portion.
- the third failure mode known as sliding, is the translational motion of the contact portions relative to one another. Fretting causes the interface between the male and female contact portions to wear out. Thus causing high contact resistance which in turn exhibits the same type of failure as previously described for short term failure modes.
- U.S. Pat. No. 4,545,638 entitled Rib Cage Terminal One design of an electrical contact is disclosed in U.S. Pat. No. 4,545,638 entitled Rib Cage Terminal.
- the female connector disclosed therein has a central spine from which extends, at first and second ends of the connector, one or more pairs of cantilevered beams.
- the beams in each pair are angled forwardly or rearwardly and are formed into a structure generally reminiscent of a human rib cage.
- the ribbed structure defines a generally enclosed opening.
- the connector is received in a cavity formed in a housing.
- the housing is utilized for structural rigidity because the disclosed "rib cage" connector is not robust enough to operate as a stand alone connector.
- This design is disadvantageous because the extra step of placing the connector in a housing increases manufacturing difficulty and adds cost. Further, this operation is often done by hand and is therefore prone to human error. For example, due to the repetitive nature of the operation it is common for the operator to "miss" placing a connector in a particular housing. This housing, when used in the field, will have to be discarded.
- the present invention provides an electrical contact including a lead-in barrel section enclosing a pin receiving cavity having a generally longitudinally uniform cross section extending a predetermined length and an electrically conducting rib cage portion adjacent to and extending from the barrel section having a spinal portion with a plurality of curved cantilevered tynes projecting symmetrically therefrom, attached at one end to the spinal portion, and spaced apart at the other end from a corresponding tyne, each tyne extending a predetermined longitudinal length substantially less than the lead-in barrel section predetermined length.
- the electrical contact further includes a terminal barrel section extending from the rib cage portion and opposite the lead-in barrel section, having a generally longitudinally uniform cross section extending a predetermined length substantially greater than the tyne predetermined longitudinal length.
- the lead-in barrel section is tapered so as to facilitate receiving a pin contact therethrough.
- An advantage of the present invention is that the present electrical contact has a lead-in barrel section and a terminal barrel section which provides rigid support for a male contact, thereby obviating the need for a connector housing.
- FIG. 1 is a top view of an electrical contact with tynes directed toward the lead-in section according to the present invention
- FIG. 2 is a top view of an electrical contact with tynes directed away from the lead-in section according to the present invention.
- FIG. 3 is a perspective view of an electrical contact with a circular cross-section according to the present invention.
- FIGS. 1-3 wherein a female electrical contact 10 with a lead-in barrel section 12, a central rib cage portion 14, and a terminal barrel section 16 is shown.
- the structural attributes of the electrical contact 10 are made by conventional stamping and forming processes.
- the electrical connector 10 has preferably a uniform, pin receiving, cross-section. As shown in FIG. 3, the cross-section is therein shown as circular but may be any other suitable cross-section, such as oval or rectangular, without departing from the scope of the present invention.
- the electrical contact 10 is preferably formed from a copper alloy.
- the lead-in barrel section 12 has a predetermined longitudinal length and a tapered end 18.
- the tapered end 18 advantageously guides a male contact (not shown) into the female electrical contact 10 without the male contact stubbing the perimeter of the barrel section 12.
- the barrel section 12 length is sufficiently long enough to insure that the longitudinal axes of both the male contact and female contact 10 are aligned when the male contact reaches the rib cage portion 14. Without the lead-in barrel section 12 the male contact longitudinal axis may be misaligned with respect to the female contact 10 longitudinal axis, thereby bringing the male contact into communication with the rib cage portion 14 from a damaging angle.
- the rib cage portion 12 Adjacent to and projecting from the lead-in barrel section 12 is the rib cage portion 14.
- the rib cage portion 12 has a spinal portion 20 with a plurality of curved cantilevered tynes 22 projecting therefrom.
- Each tyne 22 has a predetermined longitudinal length substantially less than the predetermined length of the lead-in barrel section 12.
- the tynes 22 symmetrically project from the spinal portion 20 and are preferably in three opposed pairs.
- the tynes 22 are attached at one end to the spinal portion 20 and are independently spaced apart at the other end from a corresponding tyne 22.
- the tynes 22 may be angled, with respect to a longitudinal axis of the spinal portion 20, toward or away from the lead-in barrel section 12 depending on particular design requirements and the attributes of the male connector. If so desired, the tynes 22 may project perpendicular to the axis of the spinal portion 20.
- the independent tynes 22 are advantageously sequentially loaded as the male connector is guided into the female connector 10 thereby decreasing the engagement force required. This advantage reduces the peak insertion force required and permits smooth entry of the male connector. Further, the independent tynes 22 provide multiple points of contact with the male contact thereby providing redundancies and higher current carrying capacity thus providing a more robust and reliable connection.
- the terminal barrel section 16 Adjacent to and projecting from the rib cage portion 14 and opposite the lead-in barrel section 12 is the terminal barrel section 16.
- the terminal barrel section 16 also has a predetermined longitudinal length. The predetermined longitudinal length of both the lead-in barrel section 12 and the terminal barrel section 16 are substantially greater than the longitudinal length of each individual tyne 22.
- the male contact terminates at a location along the terminal barrel portion longitudinal length.
- the male contact is thus shrouded by both the lead-in barrel section 12 and the terminal barrel section 16 on either end of the rib cage portion 14.
- This is advantageous because the combined sectional support provides a robust and rigid relationship between the male and female contacts thereby eliminating the rocking and twisting fretting failure modes. Therefore, the herein described female electrical connector may act as a stand alone connector without having to be placed in a housing for structural support, a substantial manufacturing advantage.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/993,515 US5934950A (en) | 1997-12-18 | 1997-12-18 | Electrical contact with multiple points of contact |
EP98310446A EP0924803A3 (en) | 1997-12-18 | 1998-12-18 | Electrical contact with multiple points of contact |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/993,515 US5934950A (en) | 1997-12-18 | 1997-12-18 | Electrical contact with multiple points of contact |
Publications (1)
Publication Number | Publication Date |
---|---|
US5934950A true US5934950A (en) | 1999-08-10 |
Family
ID=25539627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/993,515 Expired - Fee Related US5934950A (en) | 1997-12-18 | 1997-12-18 | Electrical contact with multiple points of contact |
Country Status (2)
Country | Link |
---|---|
US (1) | US5934950A (en) |
EP (1) | EP0924803A3 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140113510A1 (en) * | 2009-08-17 | 2014-04-24 | Norman R. Byrne | Solid wire terminal |
US9711921B2 (en) | 2015-02-27 | 2017-07-18 | Norman R. Byrne | Electrical contact receptacle for bus bars and blade terminals |
US10224657B1 (en) * | 2018-01-24 | 2019-03-05 | Te Connectivity Corporation | Spring for use in an RF contact for a plug-in module |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012103259A1 (en) * | 2012-04-16 | 2013-10-17 | Tyco Electronics Amp Gmbh | Flexible contact arrangement and contact device with selbiger |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3622956A (en) * | 1969-09-09 | 1971-11-23 | Alfred M Zak | Electrical connector |
SU377930A1 (en) * | 1971-06-24 | 1973-04-17 | Казанское Конструкторское Бюро Штепсельных Разъемов | Electrical contact vapor |
US4012106A (en) * | 1975-06-20 | 1977-03-15 | Minnesota Mining & Manufacturing Company | Insulated terminal construction |
SU864394A1 (en) * | 1979-11-13 | 1981-09-15 | Предприятие П/Я А-7672 | Electric connector |
US4545638A (en) * | 1982-06-21 | 1985-10-08 | E. I. Du Pont De Nemours And Company | Rib cage terminal |
WO1989004889A1 (en) * | 1987-11-27 | 1989-06-01 | H & P Tech Services | Technique for printing disperse dyes on glass or ceramic surfaces |
US5411419A (en) * | 1992-09-03 | 1995-05-02 | Sumitomo Wiring Systems, Ltd. | Multipole connection terminal and method for producing same |
US5611717A (en) * | 1994-04-22 | 1997-03-18 | The Whitaker Corporation | Miniature anti-fretting receptacle terminal |
US5749755A (en) * | 1993-10-18 | 1998-05-12 | Framatome Connectors International S.A. | Female electric terminal |
US5785560A (en) * | 1995-10-13 | 1998-07-28 | Yazaki Corporation | Ignition cable connection terminal |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2614210C3 (en) * | 1976-04-02 | 1979-09-20 | Fa. Leopold Kostal, 5880 Luedenscheid | Electrical connector |
AT365003B (en) * | 1979-05-02 | 1981-12-10 | Neutrik Ag | CONTACT SOCKET TO RECEIVE A CONTACT PIN FOR ELECTRICAL CONTACTS |
GB2162700A (en) * | 1984-08-01 | 1986-02-05 | Plessey Co Plc | Electrical connectors |
WO1990006601A1 (en) * | 1988-12-08 | 1990-06-14 | E.I. Du Pont De Nemours And Company | Ribbed terminal having pin lead-in portion thereon |
-
1997
- 1997-12-18 US US08/993,515 patent/US5934950A/en not_active Expired - Fee Related
-
1998
- 1998-12-18 EP EP98310446A patent/EP0924803A3/en not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3622956A (en) * | 1969-09-09 | 1971-11-23 | Alfred M Zak | Electrical connector |
SU377930A1 (en) * | 1971-06-24 | 1973-04-17 | Казанское Конструкторское Бюро Штепсельных Разъемов | Electrical contact vapor |
US4012106A (en) * | 1975-06-20 | 1977-03-15 | Minnesota Mining & Manufacturing Company | Insulated terminal construction |
SU864394A1 (en) * | 1979-11-13 | 1981-09-15 | Предприятие П/Я А-7672 | Electric connector |
US4545638A (en) * | 1982-06-21 | 1985-10-08 | E. I. Du Pont De Nemours And Company | Rib cage terminal |
WO1989004889A1 (en) * | 1987-11-27 | 1989-06-01 | H & P Tech Services | Technique for printing disperse dyes on glass or ceramic surfaces |
US5411419A (en) * | 1992-09-03 | 1995-05-02 | Sumitomo Wiring Systems, Ltd. | Multipole connection terminal and method for producing same |
US5749755A (en) * | 1993-10-18 | 1998-05-12 | Framatome Connectors International S.A. | Female electric terminal |
US5611717A (en) * | 1994-04-22 | 1997-03-18 | The Whitaker Corporation | Miniature anti-fretting receptacle terminal |
US5785560A (en) * | 1995-10-13 | 1998-07-28 | Yazaki Corporation | Ignition cable connection terminal |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140113510A1 (en) * | 2009-08-17 | 2014-04-24 | Norman R. Byrne | Solid wire terminal |
US8920201B2 (en) * | 2009-08-17 | 2014-12-30 | Norman R. Byrne | Solid wire terminal |
US9711921B2 (en) | 2015-02-27 | 2017-07-18 | Norman R. Byrne | Electrical contact receptacle for bus bars and blade terminals |
US10224657B1 (en) * | 2018-01-24 | 2019-03-05 | Te Connectivity Corporation | Spring for use in an RF contact for a plug-in module |
Also Published As
Publication number | Publication date |
---|---|
EP0924803A3 (en) | 2000-03-22 |
EP0924803A2 (en) | 1999-06-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FORD MOTOR COMPANY, MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YEOW, YEW THYE;REEL/FRAME:008952/0571 Effective date: 19971215 |
|
AS | Assignment |
Owner name: VISTEON GLOBAL TECHNOLOGIES, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FORD MOTOR COMPANY;REEL/FRAME:010968/0220 Effective date: 20000615 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
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REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20070810 |
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AS | Assignment |
Owner name: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT Free format text: SECURITY AGREEMENT;ASSIGNOR:VISTEON GLOBAL TECHNOLOGIES, INC.;REEL/FRAME:020497/0733 Effective date: 20060613 |
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AS | Assignment |
Owner name: JPMORGAN CHASE BANK, TEXAS Free format text: SECURITY INTEREST;ASSIGNOR:VISTEON GLOBAL TECHNOLOGIES, INC.;REEL/FRAME:022368/0001 Effective date: 20060814 Owner name: JPMORGAN CHASE BANK,TEXAS Free format text: SECURITY INTEREST;ASSIGNOR:VISTEON GLOBAL TECHNOLOGIES, INC.;REEL/FRAME:022368/0001 Effective date: 20060814 |
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Owner name: WILMINGTON TRUST FSB, AS ADMINISTRATIVE AGENT, MIN Free format text: ASSIGNMENT OF SECURITY INTEREST IN PATENTS;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:022575/0186 Effective date: 20090415 Owner name: WILMINGTON TRUST FSB, AS ADMINISTRATIVE AGENT,MINN Free format text: ASSIGNMENT OF SECURITY INTEREST IN PATENTS;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT;REEL/FRAME:022575/0186 Effective date: 20090415 |
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AS | Assignment |
Owner name: VISTEON GLOBAL TECHNOLOGIES, INC., MICHIGAN Free format text: RELEASE BY SECURED PARTY AGAINST SECURITY INTEREST IN PATENTS RECORDED AT REEL 022575 FRAME 0186;ASSIGNOR:WILMINGTON TRUST FSB, AS ADMINISTRATIVE AGENT;REEL/FRAME:025105/0201 Effective date: 20101001 |